Xamarin.Forms应用程序的操作栏中的按钮？

Question

是否有一个Xamarin.Forms方法向操作栏/导航项添加按钮(不依赖平台特定代码)？

Answer 1

如果通过操作栏/导航表示顶部的导航栏,您可以使用此方法:

private void ShowToolbar()
{
if (Device.OS == TargetPlatform.iOS)
{
    // move layout under the status bar
    this.Padding = new Thickness(0, 20, 0, 0);

    toolbarItem = new ToolbarItem("Sync", "sync_icon.png", () =>
    {
        //if (!response)
        //{
        //    response = true;
        SyncService();
        //}
        //else
        //    return;
    }, 0, 0);
    ToolbarItems.Add(toolbarItem);
}

if (Device.OS == TargetPlatform.Android)
{

    toolbarItem = new ToolbarItem("Sync", "sync_icon.png", () =>
    {
        //if (!response)
        //{
        SyncService();
        //}
        //else
        //    return;
    }, 0, 0);
    ToolbarItems.Add(toolbarItem);

}

if (Device.OS == TargetPlatform.WinPhone)
{
    toolbarItem = new ToolbarItem("Sync", "sync_icon.png", () =>
    {
        //if (!response)
        //{
        //    response = true;
        SyncService();
        //}
        //else
        //    return;
    }, 0, 0);
    ToolbarItems.Add(toolbarItem);
    }
}